Table 1

Proteins with and without start codon introns

Vertebrata

Arthropoda

Fungi

Magnoliophyta

sci

no sci

sci

no sci

sci

no sci

sci

no sci


length

253.7

333.7

271.3

419.2

289.1

403.7

152.9

211.2


A

6.84%

7.04%

7.56%

7.22%

7.54%

7.74%

8.23%

8.46%

C

1.76%

2.12%

1.36%

1.91%

1.08%

1.21%

2.03%

1.94%

D

5.15%

4.86%

5.52%

5.31%

5.37%

5.55%

4.68%

5.35%

E

6.69%

7.08%

6.78%

6.61%

7.28%

6.57%

6.67%

6.44%

F

3.63%

3.79%

3.48%

3.82%

3.93%

3.72%

3.55%

3.39%

G

6.85%

6.26%

5.90%

5.55%

5.89%

6.46%

7.90%

7.56%

H

2.49%

2.59%

2.36%

2.60%

2.08%

2.45%

2.47%

2.53%

I

4.98%

4.42%

5.18%

5.18%

5.30%

5.10%

4.61%

4.37%

K

7.94%

5.95%

8.08%

5.89%

6.77%

5.53%

6.52%

5.20%

L

9.32%

10.26%

9.89%

9.88%

9.03%

9.30%

8.61%

8.83%

M

2.40%

2.35%

2.62%

2.51%

1.94%

2.19%

2.60%

2.54%

N

3.45%

3.52%

4.63%

4.59%

4.57%

3.87%

3.31%

3.45%

P

5.40%

5.94%

4.20%

5.02%

5.66%

5.96%

5.10%

5.51%

Q

4.42%

4.75%

4.57%

4.81%

4.32%

3.90%

3.64%

3.52%

R

6.20%

5.77%

6.43%

5.84%

5.71%

5.90%

8.09%

7.16%

S

6.75%

7.99%

6.20%

7.76%

8.13%

8.54%

7.16%

8.54%

T

5.13%

5.15%

4.98%

5.37%

5.46%

5.71%

4.85%

4.94%

V

7.01%

6.20%

6.43%

6.09%

6.08%

6.12%

6.22%

6.58%

W

0.87%

1.27%

0.90%

1.06%

0.97%

1.40%

1.27%

1.41%

Y

2.74%

2.68%

2.92%

3.00%

2.88%

2.78%

2.50%

2.28%


Average length (in amino acids) and amino acid frequencies for proteins without signal peptides, divided into proteins with ("sci") and without ("no sci") start codon introns. Where the difference for a particular amino acid is greater than 0.5%, the higher percentage is shown in boldface.

Nielsen and Wernersson BMC Genomics 2006 7:256   doi:10.1186/1471-2164-7-256

Open Data